Question

What is at the base of all ecological pyramids?

Answer 1

Answer:

Define a trophic level and describe what types of organisms are always found in the first trophic level (at the base of an ecological pyramid). Trophic level is each step in a food chain or food web. Primary producers are always found in the first trophic level.

Answer 2

Answer:

The base of the pyramid is composed of species called autotrophs, the primary producers of the ecosystem. All other organisms in the ecosystem are consumers called heterotrophs, which either directly or indirectly depend on the primary producers for food energy.